9 results about "Radiofrequency field" patented technology

The application relates to the field of semiconductor packaging and discloses a dual-mode cooperative high-aspect-ratio glass via metallization integrated process, which comprises the following steps: preparing a high-aspect-ratio via by laser modification and wet etching on a glass substrate; preparing a metal seed layer on the surface of the substrate, and hot-press bonding two pieces of substrates to form a stacked structure by using a light-decomposing bonding layer; placing the stacked structure in high-pressure carbon dioxide for pre-lubricating treatment, and then simultaneously applying a pulse direct current and a radio frequency power source for dual-mode cooperative electroplating; after surface polishing, irradiating the bonding layer with ultraviolet light to separate the substrates and perform annealing. The application changes the electric field distribution by means of double-glass stacking, replaces air with high-pressure gas to eliminate the gas-liquid interfacial tension of micropores, and breaks the ion mass transfer barrier with the help of a radio frequency field, so that the problems of bubble blockage and concentration difference polarization in the high-aspect-ratio via are solved, efficient and dense filling of metal in the deep hole is realized, and the substrates can be separated without residual glue and damage.

The present disclosure provides an upper electrode assembly, a semiconductor process chamber, and a semiconductor processing device, said upper electrode assembly comprising: a carrier, fixed on a chamber body of a semiconductor process chamber and provided with a receiving hole; a radio frequency isolation ring, carried on the carrier and at least partially located in the receiving hole, and used to block radio frequency energy; a gas spray head, passing through an annular cavity of the radio frequency isolation ring and carried on the radio frequency isolation ring, and capable of feeding radio frequency energy into the semiconductor process chamber; a first positioning and adjustment module, comprising: a fixing member, disposed on the carrier and located outside the radio frequency isolation ring; a pressing member, connected to the fixing member and extending toward a center of the radio frequency isolation ring, and capable of cooperating with the carrier to clamp and position the radio frequency isolation ring and the gas spray head; and an adjustment mechanism, disposed on the fixing member and capable of moving radially along the radio frequency isolation ring to enable radial movement of the gas spray head. The described upper electrode assembly can adjust the concentricity between the respective components, and can also avoid energy crosstalk within the radio frequency field, thereby improving film formation quality.

The invention discloses a real-time simulation resolving system for a complex electromagnetic environment. The system adopts a heterogeneous architecture combining radio frequency scene real-time resolving software and a hardware acceleration unit. Comprising a high-performance computing processing platform, radio frequency scene real-time resolving software and a hardware acceleration unit. The core of the system is that task division is realized through software and hardware cooperation: the calculation processing platform runs radio frequency scene real-time resolving software and is responsible for executing beat-level calculation, including analysis of a guide instruction and an external message, generation of a radiation source signal template and calculation of scene characteristic parameters; the hardware acceleration unit is specially used for pulse-level calculation, generates and modulates a multi-path radiation source pulse sequence in real time according to a signal template and scene characteristic parameters, and finally outputs a high-density staggered pulse stream through a high-speed optical fiber interface after interweaving and sorting. By means of the beat-pulse secondary calculation model, the problems that a traditional scheme is poor in real-time performance and low in fidelity are effectively solved, environment pulse density real-time calculation not lower than one million pulses per second can be supported, and the high-precision and real-time performance test verification requirements of electronic information equipment in the complex and changeable electromagnetic environment are met.

The application discloses a multi-source micro-energy collection power distribution characteristic evaluation method and device and a storage medium, and relates to the technical field of micro-energy collection. Firstly, a multi-natural environment variable related coupling Copula function model is established according to historical wind speed, illumination, temperature and radio field intensity information of an application site, then a sampling point needing to be evaluated is established based on the probability density distribution characteristics of the natural environment, then the total power corresponding to the output of a mixed micro-energy collection system of each sampling point is calculated based on the power output characteristic curves of each micro-energy collection device, further, the multi-source mixed micro-energy collection system output power evaluation function under the sampling point is established with each natural environment variable as the dependent variable, the sampling point depth is adaptively increased by nesting until the final output power evaluation function is determined, finally, an output power sample sequence is generated, and the multi-source mixed micro-energy collection system output power probability density function is determined based on kernel density estimation.

The application aims at solving the technical problem that the time resolution of the system is difficult to break through the technical barrier of 100 femtoseconds due to the phase jitter between the radio frequency field and the pump laser in the prior art, and providing an ultrafast electron pulse non-jitter static magnetic time compression device and compression method; the device comprises a femtosecond laser, an ultrafast electron gun, an electron beam collimation transmission assembly, an Omega type static magnetic time compression assembly, an electron beam aberration correction and final stage focusing assembly and a sample cavity which are sequentially arranged on the light output path of the femtosecond laser; the Omega type static magnetic time compression assembly is used for introducing an energy related time delay to the ultrafast electron pulse, compensating the initial time chirp of the electron pulse, and compressing the pulse width of the ultrafast electron pulse to below 100 femtoseconds. In the process of electron pulse acceleration and pulse compression, the device does not need to consider the time jitter between the radio frequency field and the femtosecond laser, and can maximize the time resolution of the ultrafast characterization instrument.

The invention concerns a medical device that combines the simultaneous use of high- gradient magnetic fields and radiofrequency fields for the treatment of patients. The device presents an innovative conductive electrode equipped with specific notches designed to reduce the formation of Eddy currents, which can cause unwanted heating and energy loss. Thanks to these notches, the device allows for more efficient transmission of the magnetic field without compromising radiofrequency intensity, improving both safety and therapeutic efficacy. This innovative design also increases the reliability and longevity of the device, reducing patient risks and maintenance costs.

A method for charging a fully depleted battery of a wireless charging (WLC) device is provided. An RF controller and a read-only non-volatile memory of the WLC device is powered with the RF field of a WLC charger device. The RF controller controls charging of the battery by the RF field using a first charging program stored in the read-only non-volatile memory. A microcontroller of the WLC device is booted up after the battery has reached a predetermined voltage level. The microcontroller loads a second more complex dynamic charging program into a volatile random-access memory (RAM) of the WLC device for execution by the RF controller. The RF controller transitions code execution from the first charging program in the read-only non-volatile memory to the second charging program in the RAM. In another embodiment, the WLC device is provided.

A device for treating a target lesion may include an elongate body comprising a tissue modification device on a distal end of the elongate body. The tissue modification device may include an electrode array and an expandable support structure configured to support the electrode array. When expanded, the expandable support structure is configured to space adjacent electrodes of the electrode array at a substantially equal distance. Further, when expanded, the electrode array is configured to generate one or more tissue modification energy fields around the expandable support structure when an electrical current is supplied to the electrode array. A method of treating a target lesion may include advancing a tissue modification device to a target tissue; expanding the tissue modification device to expand an electrode array; and generating a plurality of zones of radiofrequency (RF) fields through at least a part of the electrode array to ablate the target lesion.

The application discloses a pseudo-pure state preparation method and device based on radio frequency field inhomogeneity. The pseudo-pure state preparation method comprises the following steps: performing a first unitary operation on a thermal equilibrium state of a nuclear magnetic resonance sample to obtain a first quantum state; performing a second unitary operation on the first quantum state, so that diagonal elements corresponding to nuclear spin polarization components in a density matrix of the first quantum state are rotated to a preset direction, and off-diagonal elements corresponding to nuclear spin polarization components are rotated to a direction perpendicular to the preset direction, to obtain a second quantum state; applying a radio frequency field with predetermined parameters to the second quantum state by using a radio frequency coil to perform a non-unitary operation, to obtain a third quantum state; and performing a third unitary operation on the third quantum state to rotate nuclear spin polarization components in the third quantum state to an initial direction, to obtain a pseudo-pure state of the nuclear magnetic resonance sample. The method does not need to use a gradient field, so that the preparation difficulty is reduced, and the preparation time is shortened.